EP0468932B1 - Dispositif pour la séparation de sacs ou des objets finis, précoupés et formés par un procédé de soudage thermique ou haute fréquence, à partir d'une ou de plusieurs bandes continues de film de plastique thermoscellables - Google Patents
Dispositif pour la séparation de sacs ou des objets finis, précoupés et formés par un procédé de soudage thermique ou haute fréquence, à partir d'une ou de plusieurs bandes continues de film de plastique thermoscellables Download PDFInfo
- Publication number
- EP0468932B1 EP0468932B1 EP91830065A EP91830065A EP0468932B1 EP 0468932 B1 EP0468932 B1 EP 0468932B1 EP 91830065 A EP91830065 A EP 91830065A EP 91830065 A EP91830065 A EP 91830065A EP 0468932 B1 EP0468932 B1 EP 0468932B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separation
- continuous strips
- separation means
- finished
- bags
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 31
- 239000002985 plastic film Substances 0.000 title claims abstract description 6
- 229920006255 plastic film Polymers 0.000 title claims abstract description 6
- 238000003466 welding Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title description 5
- 230000008569 process Effects 0.000 title description 3
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 101000601423 Homo sapiens N-terminal EF-hand calcium-binding protein 2 Proteins 0.000 description 1
- 102100037704 N-terminal EF-hand calcium-binding protein 2 Human genes 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1827—Means for removing cut-out material or waste by tearing
Definitions
- the present invention relates to a device for separating bags or finished items generally, pre-cut and formed by a thermal or high frequency welding process, from one or more continuous strips of heat-sealable plastic film.
- the finished bags or items are pre-cut, generally around their entire peripheral outline, and the conventional method of separation is simply for an operator to apply pressure to the pre-cut outline (a weakened area along which the plastic material can be torn easily and precisely) and detach the bag or item forcibly by hand.
- the prior art also embraces automatic systems for bringing about the separation in question, using intricate gripper mechanisms by means of which to lay hold on the edge of the bags advancing along the conveyor and detach them forcibly from the remainder of the continuous strips of film.
- US-A-4,096,981 shows an apparatus according to the preamble of claim 1, for use in stripping a continuous web from at least along a portion of the marginal edge of a body comprising deflecting means pivotally connected to supporting means for assisting in directing the leading edge of the advanced continuous web vertically so as to facilitate a stripping thereof.
- the apparatus also comprises stripping means including a pair of cooperating rollers for grabbing therebetween the vertically deflected continuous web and stripping it from the body.
- Said apparatus does not completely solve the mentioned drawbacks, it is still rather complex and effective only for obtaining finished items of rigid type from a continuous web.
- the object of the present invention is to overcome the drawbacks mentioned above, and in particular to enable the separation of pre-cut bags or comparable items from continuous plastic film material using an automatic device that is simple in construction and easily adjusted, and thus affords a saving in capital outlay and a reduction in the set-up time required for a given end-product.
- a further object of the invention is to provide a device able substantially to match the output rate of a supply machine, in particular thermal or high frequency welding equipment, and capable therefore of being integrated into an existing line without causing any fall in productivity.
- 1 denotes a table consisting in a plurality of wires 3 upon and along which to support and feed at least one continuous strip of heat-sealable material denoted 2.
- Such material is utilized in the production of bags or other comparable finished items fashioned by thermal or high frequency welding executed along pre-cut guide lines coinciding with the peripheral outline of the item.
- the cylinder 4 and the relative rod 5 constitute partial separation means by which to restrain the continuous strip of material momentarily as it passes along the table 1 and thus bring about a partial separation of each finished bag 13.
- the strip is fed through a gap between two rollers 11 and 10 disposed substantially at 45° to the path followed by the strip along the table.
- rollers are positioned in such a manner that the pneumatic cylinder 4, or whatever partial separation means, will be encompassed within the 45° angle described by the axes of the rollers and the axis of the path followed by the strip.
- the first roller 11 encountered revolves freely, whereas the second roller 10 is live, power driven by means not shown in the drawings, and serves to transmit motion to a looped conveyor belt 12 along which the bags run out.
- rollers 11 and 10 serve to divert the path of the strip or strips through 90° in a plane parallel to the table 1 and indeed substantially coinciding therewith, given that the intervening distance is equal to no more than the diameter of the rollers.
- Each bag 13 separated from the stip 2 passes under a second pressure wheel 20 and along the conveyor belt 12 to the runout.
- the film material from which the finished bags are separated now reduced to one or more offcuts 15, passes from between the two rollers 11 and 10 and is drawn clear by a pair of pinch rollers 14, one of which power driven.
- the angled rollers 11 and 10, pressure wheels 9 and 20 and pinch rollers 14 thus constitute separation means for completing the separation of the finished bags from the remainder, termed offcuts, of the continuous strips of film material 2 and directing them onto a conveyor belt for collection at the runout of the device, and for distancing waste or offcut film 15 from the device for disposal.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Claims (5)
- Dispositif pour séparer des sacs ou d'autres objets finis (13) à partir d'une ou de plusieurs bandes continues (2) de films en plastique thermoscellables, les objets finis (13) étant formés par le soudage thermique ou à haute fréquence d'une ou de plusieurs bandes continues (2), les bandes continues (2) étant précoupées le long du contour des objets finis, le dispositif comprenant des moyens de séparation pour compléter la séparation des objets finis (13) des découpures chauffées qui restent des bandes continues, les moyens de séparation comprenant des rouleaux dont les axes sont sur un plan parallèle au plan sur lequel la ou les bandes continues (2) sont avancées, les moyens de séparation étant à même de dévier le parcours des découpures tout en ramassant la bande de découpures et en transférant les objets finis (13) vers un transporteur à bande pour leur ramassage dans une zone d'arrivée du dispositif,
caractérisé en ce fait que;- le dispositif comprend des moyens servant à faire avancer la ou les bandes continues (2) le long d'une table (1), de même que les moyens de séparation partielle (4, 5) pour presser dans la zone d'angle du contour de chaque objet fini (13) comprise dans la ou les bandes continues (2) qui avancent de façon à provoquer une séparation partielle des objets du ou des films le long d'un contour précoupé;- les moyens de séparation (9, 10, 11, 20) sont disposés en aval des moyens de séparation partielle (4, 5), les axes des rouleaux décrivant un angle de 45 degrés avec la direction de l'avance de la bande ou des bandes continues (2), l'angle englobant les moyens de séparation partielle (4, 5), les moyens de séparation (9, 10, 11, 20) étant à même de détourner le parcours des découpures de 90 degrés en substance à l'intérieur du plan des axes du rouleau;- le dispositif comprend en outre des moyens pour distancer les découpures (15) de la séparation suivante du dispositif. - Un dispositif comme celui de la revendication 1, dans lequel les moyens de séparation partielle consistent en un cylindre pneumatique (4) dont la tige (5) s'étend perpendiculairement à la table (1) de façon à heurter sur le matériau de la bande à partir du dessus jusqu'à un point qui coïncide avec une zone d'angle du contour de chaque objet fini (13) suivant et de provoquer ainsi une séparation partielle de l'objet du matériel du film continu le long du contour précoupé.
- Un dispositif conformément aux revendications précédentes, dans lequel un des rouleaux anglés des moyens de séparation est un rouleau à propulsion mécanique (10) qui entraîne le transporteur à bande de la zone d'arrivée (12). Les bandes continues étant introduites entre le rouleau à propulsion mécanique et le rouleau anglé, et dans lequel les moyens de séparation servant à compléter la séparation des objets finis (13) comprennent:- une première roue (9) par laquelle la pression est appliquée au matériel de la bande le long du bord le plus extérieur qui se trouve le plus près des moyens de séparation partielie (4) de façon à faciliter le passage du matériel entre les deux rouleaux anglés (11, 10) et à provoquer une séparation complète et automatique le long de l'axe de 45°, sur lequel les objets finis (13) sont dirigés vers le transporteur à bande de la zone d'arrivée (12) et sous une deuxième roue de pression (20), et es découpures sont dirigées vers les moyens de distancement.
- Un dispositif conformément aux revendications 1 ou 3, dans lequel les moyens de distancement comprennent une paire de rouleaux (14), l'un desquels à propulsion mécanique, qui s'affrontent l'un l'autre en rotation, et qui sont disposes avec leurs axes parallèles au parcours suivi par le matériel de la bande le long de la table (1), entre lesquels le matériel de découpure est pincé et est dirigé vers un emplacement pour les déchets.
- Un dispositif conformément a la revendication 4, qui comprend des moyens de propulsion par lesquels la force motrice est transmise à la fois au transporteur à bande de la zone d'arrivée (12), au moyen du rouleau anglé à propulsion mécanique correspondant (10), et aux rouleaux de pincement (14) au moyen d'une ligne de propulsion mécanique qui consiste en une chaîne (8), un arbre de transmission (16) unis en rotation par un pignon en prise avec la chaîne, et une paire d'engrenages d'angle dont un élément (17) est claveté à l'arbre de transmission (16) et l'autre élément (18) est claveté à un arbre (19) qui est disposé à angle droit sur l'arbre de transmission (16) et qui supporte un des rouleaux de pincement (14).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT4252190 | 1990-07-09 | ||
| IT42521A IT1242395B (it) | 1990-07-09 | 1990-07-09 | Dispositivo per il distacco di buste o pezzi finiti preintagliati ricavati, con procedimento di saldatura termica o ad alta frequenza, da uno o piu' films continui di materiale plastico termosaldabile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0468932A1 EP0468932A1 (fr) | 1992-01-29 |
| EP0468932B1 true EP0468932B1 (fr) | 1995-02-15 |
Family
ID=11254288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91830065A Expired - Lifetime EP0468932B1 (fr) | 1990-07-09 | 1991-02-27 | Dispositif pour la séparation de sacs ou des objets finis, précoupés et formés par un procédé de soudage thermique ou haute fréquence, à partir d'une ou de plusieurs bandes continues de film de plastique thermoscellables |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0468932B1 (fr) |
| AT (1) | ATE118395T1 (fr) |
| DE (1) | DE69107365T2 (fr) |
| DK (1) | DK0468932T3 (fr) |
| IT (1) | IT1242395B (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3619228B2 (ja) * | 2002-11-12 | 2005-02-09 | トタニ技研工業株式会社 | 製袋機 |
| CN104044184B (zh) * | 2013-03-12 | 2015-09-30 | 昆山巨闳机械科技有限公司 | 含浸玻璃纤维布无屑分条裁剪机 |
| CN105479539B (zh) * | 2015-12-25 | 2018-02-09 | 建新赵氏集团有限公司 | 一种车窗导槽密封条的切割装置 |
| CN106078869B (zh) * | 2016-06-30 | 2017-10-24 | 浙江汇锋薄膜科技有限公司 | 一种改进的装饰膜切割机 |
| CN107186783B (zh) * | 2017-07-17 | 2019-02-19 | 刘勇 | 一种广告设计裁切装置 |
| CN110861150B (zh) * | 2019-11-19 | 2021-08-17 | 范武 | 一种气模加工用裁剪废料收集设备 |
| CN112519318B (zh) * | 2020-11-30 | 2023-03-14 | 重庆鼎盛印务股份有限公司 | 耐高温蒸煮袋的制造工艺 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2789640A (en) * | 1953-04-09 | 1957-04-23 | Johnson & Johnson | Machine and process for cutting and conveying small patches |
| US3679116A (en) * | 1971-02-01 | 1972-07-25 | Eastman Kodak Co | Web turning and guiding apparatus |
| US4096981A (en) * | 1977-03-18 | 1978-06-27 | Wilson Jones Company | Apparatus for stripping a continuous web of material from the marginal edge of a body |
| US4346855A (en) * | 1980-07-24 | 1982-08-31 | Elizabeth S. Biggar | Stripping method and apparatus for the processing of a continuous laminated web |
| US4467948A (en) * | 1982-07-29 | 1984-08-28 | Deslauriers Clovis F | Waste stripper |
-
1990
- 1990-07-09 IT IT42521A patent/IT1242395B/it active IP Right Grant
-
1991
- 1991-02-27 DE DE69107365T patent/DE69107365T2/de not_active Expired - Fee Related
- 1991-02-27 DK DK91830065.8T patent/DK0468932T3/da active
- 1991-02-27 EP EP91830065A patent/EP0468932B1/fr not_active Expired - Lifetime
- 1991-02-27 AT AT91830065T patent/ATE118395T1/de active
Also Published As
| Publication number | Publication date |
|---|---|
| IT9042521A1 (it) | 1992-01-09 |
| DE69107365T2 (de) | 1995-08-24 |
| ATE118395T1 (de) | 1995-03-15 |
| EP0468932A1 (fr) | 1992-01-29 |
| DK0468932T3 (da) | 1995-07-17 |
| IT9042521A0 (it) | 1990-07-09 |
| DE69107365D1 (de) | 1995-03-23 |
| IT1242395B (it) | 1994-03-04 |
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